Former Defense Secretary Donald H. Rumsfeld

Former Defense Secretary Donald H. Rumsfeld prepares to testify on Capitol Hill in Washington on Aug. 1 before the House Oversight and Government Reform Committee hearing investigating the friendly fire death of Pat Tillman in Afghanistan.

Former Defense Secretary Donald H. Rumsfeld prepares to testify on Capitol Hill in Washington on Aug. 1 before the House Oversight and Government Reform Committee hearing investigating the friendly fire death of Pat Tillman in Afghanistan. (AP/Susan Walsh)

Former Defense Secretary Donald H. Rumsfeld prepares to testify on Capitol Hill in Washington on Aug. 1 before the House Oversight and Government Reform Committee hearing investigating the friendly fire death of Pat Tillman in Afghanistan.AP/Susan Walsh